Shower drain system



FIG. 1 is a rear elevation view thereof;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of a shower drain system showing my new design. 

The ornamental design for a shower drain system, as shown and described. 